864891060 has 72 divisors (see below), whose sum is σ = 2661885408. Its totient is φ = 209668800.

The previous prime is 864891043. The next prime is 864891061. The reversal of 864891060 is 60198468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864891061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52306 + ... + 66825.

Almost surely, 2^864891060 is an apocalyptic number.

It is an amenable number.

864891060 is an abundant number, since it is smaller than the sum of its proper divisors (1796994348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864891060 is a wasteful number, since it uses less digits than its factorization.

864891060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119165 (or 119152 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 864891060 is about 29409.0302458276. The cubic root of 864891060 is about 952.7679422002.

The spelling of 864891060 in words is "eight hundred sixty-four million, eight hundred ninety-one thousand, sixty".